ACPS (Axle Counter Plus)
The Axle Counter Plus (ACPS) counts the number of train axles and provides information about track section occupancy. This technology utilizes Bragg Grating optical sensors, which offer highly reliable axle counts and section status updates.
Fiber Bragg Grating (FBG) Sensors
FBG sensors are optical sensors that utilize light reflection within optical fibers to detect changes in physical parameters such as strain, temperature, and pressure. These sensors have a periodic variation in the refractive index along the fiber core, which reflects a specific wavelength of light, called the Bragg wavelength, while allowing other wavelengths to pass. When external forces (strain or temperature changes) are applied, the spacing of the grating and the refractive index change, shifting the reflected wavelength.
Advantages of FBG Technology
- High Sensitivity: Accurate and reliable measurements of strain, temperature, and pressure.
- Multiplexing Capability: Multiple FBG sensors can be embedded along a single fiber, enabling simultaneous monitoring of several points without extra wiring.
- Electromagnetic Immunity: Immune to electromagnetic interference (EMI), suitable for harsh environments.
- Small Size and Lightweight: Compact and lightweight, easily integrated into structures.
- Long-Term Stability: Excellent stability and durability with minimal signal degradation.
- Remote Sensing: Capable of transmitting data over long distances with minimal signal loss, ideal for remote applications.
Key Features of ACPS
- Accurate Axle Counting: Utilizes advanced FBG optical sensors for precise axle detection and counting, ensuring reliable operation even in challenging environments.
- Real-Time Section Occupancy Monitoring: Continuously monitors track sections to determine whether they are occupied or clear, enhancing train traffic management and safety.
- High Reliability: Immune to electromagnetic interference, making it more dependable than traditional axle counting systems in environments with heavy electrical noise or interference.
- Durable and Low Maintenance: The FBG optical sensors are robust and require minimal maintenance, reducing downtime and operational costs.
- Enhanced Safety: Provides accurate and timely information on track section status, ensuring safe train operations by preventing potential collisions or conflicts.
- Scalable and Flexible: Can be easily integrated into various railway signaling systems, offering flexibility for different track layouts and lengths.
Graphs related to axle counts:
.png)
.png)